#pragma once
#include<iostream>
using namespace std;


class A {
public:
	A(int a = 1) {
		_a = a;
	}

	A(int a = 1, int b = 2, int c = 3) {
		_a = a;
		_b = b;
		_c = c;
	}

	void Print() {
		cout << _a << " " << _b << " " << _c << endl;
	}

	void Print1() {
		cout << "Print()" << endl;
	}

	friend void Print2(const A& aa) {
		cout << "_a = " << aa._a << endl;
	}


private:
	int _a;
	int _b;
	int _c;
};